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gameoflife-appleii
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Editor screen can be erased

This commit is contained in:
Christophe Meneboeuf 2017-09-28 00:34:01 +02:00
parent 9eb1ce0a3b
commit 59344bab61
2 changed files with 70 additions and 24 deletions
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src/gol_main.c
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@ -40,7 +40,9 @@ void clear_text( void ); /* Clears the 4 line text field in split
void set_text( const char* const text );/* Prints a custom text into the 4 line text field in splitted mode */
void draw_cells( void ); /* Draws the actual cells */
void editor( void ); /* lets the user draw some starting cells */
int8_t editor_erase( void ); /* erases the content of the edit window */
int8_t editor_load_save( const uint8_t load_or_save );
int8_t file_load_save(char* filename, const uint8_t load_or_save, uint8_t* buffer, const uint16_t len);
void toggle_cell( const uint8_t x, const uint8_t y ); /* toggles the cell at the given coordinates. \
Returns the cursor X position */
uint16_t my_sleep(const uint8_t time); /* "Sleeps" for an amount of time. 1 ~= 4.2ms A dummy value is returned to trick the optimizer */
@ -86,6 +88,12 @@ enum {
SAVE
};
enum{
ERR_FILE_NOERROR,
ERR_FILE_OPEN,
ERR_FILE_READ
};
enum eMyBoolean {
FALSE = 0,
TRUE = 1
@ -240,7 +248,7 @@ void draw_cells( void ) {
}
}
const char* const Text_Editor ="H K U J: Move the cursor\nSPACE : Toggle a cell\n(L)oad - (S)ave - (R)un\n(A)bout";
const char* const Text_Editor ="H K U J: Move the cursor\nSPACE : Toggle a cell\n(L)oad - (S)ave - (E)rase - (R)un\n(A)bout";
void editor( void )
{
#define KEY_LEFT 'h'
@ -323,7 +331,7 @@ void editor( void )
break;
case 's':
if( editor_load_save( SAVE ) == 0) {
set_text( "Stage saved!\nnPress a key to continue." );
set_text( "Stage saved!\nPress a key to continue." );
cgetc();
}
set_text( Text_Editor );
@ -331,6 +339,15 @@ void editor( void )
update_color = FALSE;
update_coords = TRUE;
break;
case 'e':
update_coords = TRUE;
update_color = FALSE;
if( editor_erase() == 0 ) {
draw_cells();
update_color = TRUE;
}
set_text( Text_Editor );
break;
case 'r':
quit = 1;
gfx_pixel( color_pixel, x_cursor, y_cursor ); //clear cursor
@ -360,51 +377,80 @@ int8_t editor_load_save( const uint8_t load_or_save )
{
// NOTE sprintf with %s does not work...
#define ESC 0x1B
uint8_t handle;
char filename[ SAVENAME_LENGTH + 1 ];
char custom_text[ 80 ];
char str_custom[ 8 ];
char num;
uint16_t nb_bytes;
int8_t err_file;
load_or_save == LOAD ? strcpy( str_custom, "loaded ") : \
strcpy( str_custom, "saved ");
do {
strcpy( custom_text, "Enter the slot number to be " );
strcat( custom_text, str_custom );
strcat( custom_text, "[0-9]\nOr press escape to cancel.\n" );
strcat( custom_text, "[1-9]\nOr press escape to cancel.\n" );
set_text( custom_text );
num = cgetc();
} while( num != ESC && (num < 0x30 || num > 0x39) );
} while( num != ESC && (num < 0x31 || num > 0x39) );
if( num == ESC ) { return -1; }
strcpy( filename, SAVENAME );
filename[ SAVENAME_LENGTH - 1 ] = num;
filename[ SAVENAME_LENGTH ] = '\0';
file_open( filename, &handle );
strcpy( custom_text, "Accessing: " );
strcat( custom_text, filename );
set_text( custom_text );
if( file_error() != NO_ERROR ) {
strcpy( custom_text, "Cannot open file to be " );
strcat( custom_text, str_custom );
set_text( custom_text );
cgetc();
file_close( handle );
return -1;
err_file = file_load_save(filename, load_or_save, (uint8_t*)Cells, NB_COLUMNS*NB_LINES);
if(err_file == ERR_FILE_OPEN) {
strcpy( custom_text, "Cannot open file to be " );
strcat( custom_text, str_custom );
set_text( custom_text );
cgetc();
return -1;
}
load_or_save == LOAD ? nb_bytes = file_read( handle, (uint8_t*)Cells, NB_COLUMNS*NB_LINES ) : \
nb_bytes = file_write( handle, (uint8_t*)Cells, NB_COLUMNS*NB_LINES );
if( file_error() != NO_ERROR || nb_bytes != NB_COLUMNS*NB_LINES ) {
sprintf( custom_text, "An error occured: %x\nnPress a key to continue.", file_error() );
set_text( custom_text );
cgetc();
file_close( handle );
return -1;
else if( err_file == ERR_FILE_READ) {
sprintf( custom_text, "An error occured: %x\nPress a key to continue.", file_error() );
set_text( custom_text );
cgetc();
return -1;
}
file_close( handle );
return 0;
}
// A generic function to load / save the content of a file to / from a buffer
// filename: file to load / save
// load_or_save: LOAD or SAVE?
// buffer: buffer to write / read
// len: length to write / read
int8_t file_load_save(char* filename, const uint8_t load_or_save, uint8_t* buffer, const uint16_t len)
{
uint16_t nb_bytes;
uint8_t handle;
file_open( filename, &handle );
if( file_error() != NO_ERROR ) {
file_close( handle );
return ERR_FILE_OPEN;
}
load_or_save == LOAD ? nb_bytes = file_read( handle, buffer, len ) : \
nb_bytes = file_write( handle, buffer, len );
if( file_error() != NO_ERROR || nb_bytes != len ) {
file_close( handle );
return ERR_FILE_READ;
}
file_close( handle );
return ERR_FILE_NOERROR;
}
// Resets loads the SAVE #0 that is inaccessible otherwise
int8_t editor_erase( void )
{
char filename[ SAVENAME_LENGTH + 1 ];
set_text( "Clearing the screen..." );
strcpy( filename, SAVENAME );
filename[ SAVENAME_LENGTH - 1 ] = 0x30;
filename[ SAVENAME_LENGTH ] = '\0';
return file_load_save(filename, LOAD, (uint8_t*)Cells, NB_COLUMNS*NB_LINES) == ERR_FILE_NOERROR ? 0 : -1;
}
void toggle_cell( const uint8_t x, const uint8_t y )
@ -440,7 +486,7 @@ void run( void )
uint16_t nb_iterations = 2u;
KeyPressed = NO_KEY;
gotoxy( 0u, PRINTF_LINE+1 );
printf("Iteration:1\n(R)eset (S)top");
printf("Iteration:1\n(R)estart (S)top");
while( KeyPressed == NO_KEY)
{
/* Evolving the cells */